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Liquid discharge apparatus

a liquid discharge apparatus and liquid discharge technology, applied in the direction of printing, other printing apparatus, duplicating/marking methods, etc., can solve the problems of difficult control of the desired size of each liquid discharged onto the medium using known techniques, and difficult suppression of unevenness, etc., to achieve suppression of unevenness caused by liquid discharged on the medium.

Active Publication Date: 2019-03-05
SEIKO EPSON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The solution effectively suppresses unevenness by forming a skin layer on each liquid dot, preventing them from merging and maintaining desired size, thereby improving image quality and productivity.

Problems solved by technology

However, with the further increase in productivity (the increase in recording speeds) of recent liquid discharge apparatuses (recording apparatuses) such as a liquid discharge apparatus that forms an image by discharging ink, or the like, it has become difficult to control the desired size of each dot of liquid discharged onto the medium using known techniques.
Because the desired size of the discharged liquid dots on the medium is poorly controlled, the liquid dots discharged onto the medium come into contact with each other, which causes unevenness.
Consequently, with the liquid discharge apparatus of such a structure, it is difficult to suppress the unevenness due to contact of the dots of the liquid discharged on the medium because the pretreatment agent does not fully work on the upper layers.

Method used

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  • Liquid discharge apparatus
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Experimental program
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first embodiment (

FIGS. 1 to 7)

[0040]FIG. 1 is a schematic side view of a recording apparatus 1 according to the first embodiment of the invention. As shown in FIG. 1, the recording apparatus 1 transports a recording medium (medium) P in a transport direction A from a setting section 14 for setting the recording medium P to a winding section 15 for winding the recording medium P via a platen 2, a platen 3, and a platen 4 that are support sections of the recording medium P. In other words, the transport route of the recording medium P in the recording apparatus 1 extends from the setting section 14 to the winding section 15, and the support section of the recording medium P includes the platen 2, the platen 3, and the platen 4, which platens are provided on the transport route. The setting section 14 rotates in a rotation direction C to send the recording medium P. The winding section 15 rotates in the rotation direction C to wind the recording medium P. Depending on the arrangement, the rotation dire...

second embodiment (fig.8)

Second Embodiment (FIG. 8)

[0067]Now, a recording apparatus according to the second embodiment will be described in detail with reference to the attached drawings. FIG. 8 is a schematic bottom view of main components of the recording apparatus 1 according to the embodiment. Components that are common to the above-described first embodiment are shown with the same reference numerals, and detailed descriptions of the components are omitted. The recording apparatus 1 according to the embodiment other than the carriage 11 has a structure similar to that of the recording apparatus 1 according to the first embodiment.

[0068]The recording apparatus 1 according to the first embodiment includes, as shown in FIG. 4, the carriage 11 that is provided with the four recording heads 12 that correspond to the four inks I respectively and a single pretreatment agent discharge head 30 on the bottom surface (the surface that is opposite the recording medium P) of the carriage 11. Meanwhile, the carriage...

third embodiment (fig.9)

Third Embodiment (FIG. 9)

[0070]A recording apparatus according to the third embodiment will be described in detail with reference to the attached drawings. FIG. 9 is a schematic plan view of main components of the recording apparatus 1 according to the embodiment. Components that are common to the above-described first and second embodiments are shown with the same reference numerals, and detailed descriptions of the components are omitted. The recording apparatus 1 according to the embodiment has a structure similar to that of the recording apparatus 1 according to the first embodiment other than the carriage 11, the ionizers 10, and the pretreatment agent discharge head 30.

[0071]The recording apparatus 1 according to the first embodiment includes, as shown in FIG. 2 to FIG. 4, the carriage 11 that is provided with the ionizers 10 and the pretreatment agent discharge head 30. Meanwhile, the recording apparatus 1 according to the embodiment includes, as shown in FIG. 9, the ionizer ...

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Abstract

A liquid discharge apparatus includes a liquid discharge section for discharging a liquid containing agglomerate components having a polarity toward a medium and at least one ion supplying section for supplying ions having a polarity opposite to that of the agglomerate components to the liquid discharged on the medium. The liquid discharge apparatus of such a structure can suppress the unevenness caused by contact of dots of the liquid discharged on the medium. The liquid apparatus can prevent or reduce contact between dots of the liquid discharged on the medium.

Description

[0001]The entire disclosure of Japanese Patent Application No: 2015-139633, filed Jul. 13, 2015 is expressly incorporated by reference herein in its entirety.BACKGROUND[0002]1. Technical Field[0003]Embodiments of the present invention relate to a liquid discharge apparatus.[0004]2. Related Art[0005]Liquid discharge apparatuses for discharging liquid such as ink toward a medium have been used. These liquid discharge apparatuses are controlled such that each dot of liquid is discharged onto the medium with a desired size using various techniques. For example, JP-A-2014-34167 discloses a liquid discharge apparatus (ink jet printer) capable of applying a pretreatment liquid that has a function of agglomerating color material components of ink to the medium.[0006]However, with the further increase in productivity (the increase in recording speeds) of recent liquid discharge apparatuses (recording apparatuses) such as a liquid discharge apparatus that forms an image by discharging ink, or...

Claims

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Application Information

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Patent Type & Authority Patents(United States)
IPC IPC(8): B41J11/00
CPCB41J11/0015B41J2/01B41M5/0017B41M7/0018
Inventor SASAKI, TSUNEYUKI
Owner SEIKO EPSON CORP